US2022203595A1PendingUtilityA1

Production method for container having covering layer

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Assignee: TOYO SEIKAN KAISHA LTDPriority: Jun 12, 2019Filed: Apr 3, 2020Published: Jun 30, 2022
Est. expiryJun 12, 2039(~12.9 yrs left)· nominal 20-yr term from priority
Inventors:Hiromitsu KiyotoHajime Inagaki
B29C 49/64B29C 49/22B29C 49/071B29K 2995/0018B29C 2049/222B29C 2949/3034B29C 2949/0715B29C 49/68B29L 2031/7158B29C 2949/3016B29C 49/06B29K 2067/00B29C 49/6419B29C 2949/22B29C 2949/3014B29C 2949/302B29L 2031/712B29C 2949/3032B29B 2911/1414B29C 49/221B29B 2911/14973B29C 2049/023
39
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Claims

Abstract

A production method for a container having a covering layer includes forming a preform having a covering layer by using a thermoplastic synthetic resin; heating the preform from an outside of the preform with an infrared heater, and heating the preform from an inside of the preform with an internal heating unit; and forming the container having the covering layer by blow molding in which the heated preform is blown.

Claims

exact text as granted — not AI-modified
1 . A production method for a container having a covering layer, the production method comprising:
 forming a preform having a covering layer by using a thermoplastic synthetic resin;   heating the preform from an outside of the preform with an infrared heater, and heating the preform from an inside of the preform with an internal heating unit; and   forming the container having the covering layer by blow molding in which the heated preform is blown.   
     
     
         2 . The production method according to  claim 1 , wherein
 the internal heating unit includes a heating rod configured to be inserted into the preform,   the production method further comprises heating the heating rod, and   the heating the preform from the inside of the preform includes inserting the heating rod heated into the preform.   
     
     
         3 . The production method according to  claim 2 , wherein the heating the heating rod includes heating the heating rod to 400° C. to 600° C. 
     
     
         4 . The production method according to  claim 1 , wherein the forming the preform includes forming the covering layer by using a material having light shielding property. 
     
     
         5 . The production method according to  claim 1 , wherein the forming the preform includes forming the preform by a double injection molding method. 
     
     
         6 . The production method according to  claim 1 , wherein
 a body of the container is formed by using a thermoplastic polyester resin, and   the covering layer is formed by using a polyolefin-based resin.

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